public void Unsubscribe_10000_Topics()
{
foreach (var topic in _topics)
{
var unsubscribeOptions = new MqttClientUnsubscribeOptionsBuilder()
.WithTopicFilter(topic)
.Build();
_mqttClient.UnsubscribeAsync(unsubscribeOptions).GetAwaiter().GetResult();
}
}
public Task UnsubscribeAsync(IEnumerable <string> topics, CancellationToken cancellationToken)
{
var builder = new MqttClientUnsubscribeOptionsBuilder();
foreach (string topic in topics)
{
builder.WithTopicFilter(topic);
}
return(client.UnsubscribeAsync(builder.Build(), cancellationToken));
}
/// <summary>
/// Subscribe to all topics, then run message exchange
/// </summary>
public async Task ProcessMessages(Dictionary <string, List <string> > topicsByPublisher, string topicTypeDescription)
{
var numTopics = CountTopics(topicsByPublisher);
Console.WriteLine();
Console.Write($"Subscribing to {numTopics} topics ");
ConsoleWriteInfo($"({topicTypeDescription})");
Console.WriteLine($" for {NumSubscribers} subscriber(s)...");
var stopWatch = new System.Diagnostics.Stopwatch();
stopWatch.Start();
// each subscriber subscribes to all topics, one call per topic
foreach (var subscriber in _mqttSubscriberClients)
{
foreach (var tp in topicsByPublisher)
{
var topics = tp.Value;
foreach (var topic in topics)
{
var topicFilter = new Packets.MqttTopicFilter()
{
Topic = topic
};
await subscriber.SubscribeAsync(topicFilter).ConfigureAwait(false);
}
}
}
stopWatch.Stop();
Console.Write($"{NumSubscribers} subscriber(s) subscribed in {stopWatch.ElapsedMilliseconds / 1000.0:0.000} seconds, ");
Console.WriteLine($"subscribe calls per second: {numTopics / (stopWatch.ElapsedMilliseconds / 1000.0):0.000}");
await PublishAllAsync();
Console.WriteLine($"Unsubscribing {numTopics} topics ({topicTypeDescription}) for {NumSubscribers} subscriber(s)...");
stopWatch.Restart();
// unsubscribe to all topics, one call per topic
foreach (var subscriber in _mqttSubscriberClients)
{
foreach (var tp in topicsByPublisher)
{
var topics = tp.Value;
foreach (var topic in topics)
{
var topicFilter = new Packets.MqttTopicFilter()
{
Topic = topic
};
MqttClientUnsubscribeOptions options =
new MqttClientUnsubscribeOptionsBuilder()
.WithTopicFilter(topicFilter)
.Build();
await subscriber.UnsubscribeAsync(options).ConfigureAwait(false);
}
}
}
stopWatch.Stop();
Console.Write($"{NumSubscribers} subscriber(s) unsubscribed in {stopWatch.ElapsedMilliseconds / 1000.0:0.000} seconds, ");
Console.WriteLine($"unsubscribe calls per second: {numTopics / (stopWatch.ElapsedMilliseconds / 1000.0):0.000}");
}
